The 2nd vol. of the 2 vol. Van Voorhees book pub. 2003 has iffy information. On page 1259 it has James Voorhees (also found as Vorus) b. circa 1801 NJ m. Mahala Skillman 11 Sept 1830 Hunterdon Co., NJ. It says his wife may be the Mahala found in the following census records starting with 1860 of Princeton, Mercer Co., NJ pg. 46 #312 lists Mahala Voorhees age 54, Debertha A. 25, Emma 23, William 22, William C. Davis 6The 1870 census same area pg. 259 #441 lists Hahala Voorhees 69, William 16, James Sprong 37, Emma 33, James V. 3, Wm. Baily 5/12. The 1880 census same area has Mahala Voorhees 78, Emma Sprong 33(same age as 1870--must mean 43), James 12 grandson, William B. grandson & Mary 6 (granddaughter). Census records can be confusing to say the least--so doubt if this is much help but thought I'd let you know. No parents given for her husband James b. c 1801.